Relintai/MLPP
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Added gaussian filter, added laplacian filter.

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This commit is contained in:
novak_99 2021-11-21 22:43:51 -08:00
parent cd0de3bf7c
commit 30737542ed
2 changed files with 23 additions and 0 deletions
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20
MLPP/Convolutions/Convolutions.cpp
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@ -8,6 +8,7 @@
#include "Convolutions/Convolutions.hpp" #include "Convolutions/Convolutions.hpp"
#include "LinAlg/LinAlg.hpp" #include "LinAlg/LinAlg.hpp"
#include "Stat/Stat.hpp" #include "Stat/Stat.hpp"
#include <cmath>
namespace MLPP{ namespace MLPP{
@ -225,6 +226,25 @@ namespace MLPP{
return pooledMap; return pooledMap;
} }
double Convolutions::gaussian2D(double x, double y, double std){
double std_sq = std * std;
return 1/(2 * M_PI * std_sq) * std::exp(-(x * x + y * y)/2 * std_sq);
}
std::vector<std::vector<double>> Convolutions::gaussianFilter2D(int size, double std){
std::vector<std::vector<double>> filter;
filter.resize(size);
for(int i = 0; i < filter.size(); i++){
filter[i].resize(size);
}
for(int i = 0; i < size; i++){
for(int j = 0; j < size; j++){
filter[i][j] = gaussian2D(i - (size-1)/2, (size-1)/2 - j, std);
}
}
return filter;
}
std::vector<std::vector<double>> Convolutions::getPrewittHorizontal(){ std::vector<std::vector<double>> Convolutions::getPrewittHorizontal(){
return prewittHorizontal; return prewittHorizontal;
} }

3
MLPP/Convolutions/Convolutions.hpp
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@ -14,6 +14,9 @@ namespace MLPP{
double globalPool(std::vector<std::vector<double>> input, std::string type); double globalPool(std::vector<std::vector<double>> input, std::string type);
std::vector<double> globalPool(std::vector<std::vector<std::vector<double>>> input, std::string type); std::vector<double> globalPool(std::vector<std::vector<std::vector<double>>> input, std::string type);
double gaussian2D(double x, double y, double std);
std::vector<std::vector<double>> gaussianFilter2D(int size, double std);
std::vector<std::vector<double>> getPrewittHorizontal(); std::vector<std::vector<double>> getPrewittHorizontal();
std::vector<std::vector<double>> getPrewittVertical(); std::vector<std::vector<double>> getPrewittVertical();
std::vector<std::vector<double>> getSobelHorizontal(); std::vector<std::vector<double>> getSobelHorizontal();